Ore-separator



(No Model.)-

2 Sheets-Sheet 1.

WT M mm Gw No. 247,629. Patented Sept. 27,1881.

(No Model.)

' I 2 Sheets-Sheet 2.

J. GARVIN.

ORE SEPARATOR.

Patented Sept. 2'7, 1881.

FIG, 5

N. PETERS. Pholc-U'hnumpher. wmin mn. D. c.

. UNITED STATES PATENT OFFIC JOHN GABVIN, OF PHILADELPHIA, PENNSYLVANIA.

ORE-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 247,629, dated September 27, 1881.

Application filed April 28,1881. (No model.) I

To all whom it may concern:

Be it known that I, JOHN GARVIN, a subject of the Queen of Great Britain and'Ireland, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Ore- Separators, of which the following is a specification.

The object of myinvention is to so construct an ore-concentrator as to effect the rapid and thorough separation of the heavy sulphurets from the lighter particles of quartz, and to screen the product, the machine being adapted for acting upon either dry or wet ore.

In the accompanying drawings, Figure 1,

Sheet 1, is a side view of my improved concentrator adapted for working dry ore; Fig. 2, a longitudinal section of the same; Fig. 3, Sheet 2, a transverse section, and Fig. 4 alougitudinal section, of the concentrator adapted for wet ore.

A is a substantial frame, to which is hung by means of chains on at each side a box, B, the latter being supported at such an angle that the pulverized ore fed into the upper end of the same will, as the box is shaken, gradually descend to the lower or discharging end.

The shaking or jarring of the box to cause the descent of the pulverized ore through the same is effected by means of a cam, b, carried by a transverse shaft, d, adapted to suitable bearings on the frame A. This cam acts upon an elastic strip, 6, secured to the bottom of the box, the tendency of the cam being to cause the box to swing in the direction of the arrow, the'retraction of the box being effected by means of a spring, 0, the efiect of which is to bring lugs c on the sides of the box into forcible contact with the posts of the frame A. The cam 1) acts upon one arm of a lever, D, which is hung to a bracket on the frame A, the other armof the lever striking the bottom of the box,

=. n'ear the lower end of the same, in the intervals between the action of the cam on the strip 0.

A double vibration or jar of the box on each revolution of the cam-shaft is thus effected.

The pulverized ore is deposited upon a screen j, which forms the bottom of the box B, this screen being of fine wire-gauze or perforated plate, and being supported upon a coarser screen, so that injury of the fine screen by the weight of the ore is prevented. The screen f is dished in the center, as shown in Fig. 3, and.

beneath said screen f is a trough, h, also dished in the center. Above the screen f, and extendin g from the lower end of the box, partly to the upper end of the same, is a frame carrying strips 15, inclined in respect to the screen f, as shown in Fig. 2, the space between the screen and the strips being greatest at the upper end of the fraine,and gradually decreasing toward the lower end of the same.

The box B has atits lower end a detachable section, E, having screens m and n, of different degrees of fineness, the said section E having an open end for the discharge of the tailin gs.

The machine shown in Figs. 1, 2, and 3 is adapted for working dry ore, the latter, in its pulverized condition, being introduced into the box B at the upper end and passing down over the screen f, which is subjected to an intermittent jarring action by the cam 11 and-lever D. The finest and heaviest particles or sulphuretspass through the screen and are caught in the trough h, collecting in the dished central portion of the same, and being finally discharged from the lower end of the trough into a suitable receptacle. The large particles of quartz, being lighter than the sulphurets, rise to the top of the mass as the latter passes down over the screen f, and as soon as said particles come under the influence of the strips i they are deflected upward and pass off without again entering the space between said strips and the screen. The heavy sulphurets which are too large to pass through the screen fare collected in the central dished portion of the same and pass onto the screen m, which is somewhat coarser than the screen f, and those particles which are too large to pass through the screen m are subjected to the action of the still coarser screen a, from which the unscreened particles pass through the open end of the section E of the box to the tailing spout.

In order to insure the jarring of the screen m, so as to facilitate the passage of particles through the same, I attach to the end of the lever D a finger, s, which, on each upward movement of the end of the lever, strikes the under side of the screen m.

A suitable spring, w, is employed to restore the lever D to its position after the action of the cam thereon.

When the ores are wet, and a stream of outward, and

water is necessary to effect the proper separation of the same, the box B is made Watertight, and is arranged at a somewhat greater angle than for dry separation, (see Fig. 4,) and the section E is replaced by a section having, in addition to the screens m and n, compartments for the reception of the sulphurets which pass through said screens, and a compartment for those which are discharged from the trough h, the compartments having at the bottom valved outlets, through which their contents can be Withdrawn at intervals.

' I claim as my invention- 1. The combination of the frameA, the shaft (1, and its cam b,the suspended concentratingbox B, having an elastic strip, 0, for the action of the cam, the retracting-spring O, and thejarring-lugs c, as set forth.

2. The combination of the frame A, the concentrating-box B, suspended therefrom, the lever D, hung to said frame A, and the cam b, adapted to act alternately upon both box and lever, as set forth.

3. The concentrating-box B, having a screen,

f, with dished central portion, and a trough, h, located beneath the screen and having its central portion correspondingly dished, as set forth.

4. The combination of the concentrating-box B and its screen f with a frame located above the screen, and having deflecting-slats i, as set forth.

5. The combination of the box B and its screenf with the detachable section E, having screens m and n, as set forth.

6. The combination of the box 15, having a scrcen,f, with the section E, having screens m and a, the lever D, having a finger, s, and the cam b, as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN GARVIN.

\Vitnesses ARMER F. MoUoRnrcK, HARRY SMITH. 

